whats the deal? - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-20-2009, 12:16 AM
Registered User
 
Join Date: Jan 2009
Location: michigan
Age: 27
Posts: 136
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
whats the deal?

hey I was looking up old threads and came accross this , I understand he has a bigger engine but I mean thats still alot of HP from 8.5-1, I dont understand how come i cant a 496 with alum. heads and a bigger cam to get 500ish hp and run lower octane fuel?? or at lease get alot of hp from 87 I mean maybe its cuase ita marine engine?? can any 1 explains this thanks alot


It is no problem what you are doing. When I designed
some marine engines back 6 years ago this kind of power
was no problem. The 540 made 656HP at 5200 and was
689#/ft at 4000. These were 8.5 to 1 engines using the small
square port Canfield head. Camshaft was a very mild hyd
roller profile in the 230 range.

If you need more info you can PM me.

Cstraub

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-20-2009, 02:44 AM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,979
Wiki Edits: 326

Thanks: 766
Thanked 1,023 Times in 855 Posts
I don't know exactly what you're looking for, but here is a DynoSim I ran up for you based on what's been talked about.
496, 9.5:1 SCR, Canfield heads, 305cc, large tube headers through the mufflers, RPM intake mounting a 900 CFM carb and this cam.....
MECHANICAL ROLLER-Great all around power. 3000+ stall with lower gear. Use headers and 9.5:1+ compression. Rough idle. 2200 to 6500, 11-692-8, 288AR, 288/288, 246/246, .623/.623, 106/114/110, Timing @ 0.050" tappet lift 17/49/57/9.
RPM HP TQ
2000 190 498
2500 240 505
3000 309 542
3500 392 588
4000 468 614
4500 531 620
5000 579 608
5500 600 571
6000 582 510

Cam change to hydraulic roller.....
HYDRAULIC ROLLER-Street/strip. 10:1+, 3000+ stall, 4.10+ gears, aftermarket intake and headers. Very rough idle. 3000 to 6500, 11-460-8, 304HR, 304/304, 244/244, .612/.612, 110
RPM HP TQ
2000 164 431
2500 210 441
3000 269 470
3500 350 525
4000 430 565
4500 504 588
5000 565 593
5500 594 568
6000 599 524
6500 568 459
Same max hp, less average torque.

Same cam, changed to 10.0:1 static compression ratio, 1000 CFM carb......
RPM HP TQ
2000 167 440
2500 214 450
3000 274 480
3500 357 536
4000 440 578
4500 517 603
5000 581 610
5500 614 586
6000 618 540
6500 595 481

Same as above, but changed to 1.8 rockers. Valve lift now 0.648"/0.648".
RPM HP TQ
2000 168 441
2500 215 452
3000 275 482
3500 359 539
4000 443 581
4500 521 608
5000 587 617
5500 623 594
6000 630 552
6500 609 492

These DynoSims were run with Canfield heads having the following flow numbers.....
.100 75 61
.200 161 115
.300 215 163
.400 257 199
.500 303 228
.600 328 251
.700 339 265

Now, I just know that someone will come on and say that there is no way this motor will produce those numbers. I'm OK with that, because it's not the absolute numbers that are important here. It's the DIFFERENCE in numbers that can be seen with changing parts around. That's the best part of using a DynoSim. It costs nothing but a little time to do as I did here, to build 4 different motors and see the DIFFERENCE.

Last edited by techinspector1; 03-20-2009 at 04:01 AM.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-20-2009, 09:16 AM
Registered User
 
Join Date: Jan 2009
Location: michigan
Age: 27
Posts: 136
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hey i apperiate you taken the time to tun those build foy me ,Im im looking for is just to understand how there ae so many people saying they have these engines running lower comp and hit higher number , or see how come they say its so easy to hit 600 hp on pump gas , and if what they say is true I should be able to hit around 500 easier then what
I been told i can and maybe run it at lower octane

Last edited by 454cutlass86; 03-20-2009 at 09:33 AM.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Deal or No Deal TV show engineczar Off-Topic 4 04-07-2007 08:19 AM
Deal,, or No Deal ZipZ28 Hotrodders' Lounge 11 01-25-2007 05:54 AM
68 chevelle good deal, not good deal? MMkokinda65gto General Rodding Tech 3 02-27-2005 06:48 AM
I just asked about the package deal! HemmiGremmie Hotrodders' Lounge 3 10-16-2003 04:06 AM
What's the best deal you ever got? Busted Knuckles Hotrodders' Lounge 45 03-23-2003 03:45 AM


All times are GMT -6. The time now is 04:02 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.